Subtract 50/20 from 90/5
1st number: 18 0/5, 2nd number: 2 10/20
90/5 - 50/20 is 31/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
90/5 = 90 × 4/5 × 4 = 360/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
50/20 = 50 × 1/20 × 1 = 50/20 - Subtract the two like fractions:
360/20 - 50/20 = 360 - 50/20 = 310/20 - After reducing the fraction, the answer is 31/2
- In mixed form: 151/2
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